can't download from c-span with rtmpdump helper

[chanc]

http://www.c-spanvideo.org/program/JiangI

Using rtmpsuck.exe, I got:

WARNING: Trying different position for client digest!
Processing connect
app : bwcheck
flashVer : WIN 11,9,900,170
swfUrl : http://static.c-spanvideo.org/assets...2013.12.18.swf
?programid=162044
ERROR: RTMP_HashSWF: connection lost while downloading swfurl http://static.c-sp
anvideo.org/assets/swf/CSPANPlayer.2013.12.18.swf
tcUrl : rtmp://cspan-146.c-spanarchives.org:1935/bwcheck
pageUrl : http://www.c-spanvideo.org/program/JiangI
ERROR: RTMP_ReadPacket, failed to read RTMP packet header
Closing connection... done!


Using rtmpsrv.exe, I got:

Streaming on rtmp://0.0.0.0:1935
WARNING: Trying different position for client digest!

ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: DECODING ERROR, IGNORING BYTES UNTIL NEXT KNOWN PATTERN!
ERROR: HandleInvoke, error decoding invoke packet
ERROR: RTMP_ReadPacket, failed to read RTMP packet header
WARNING: Trying different position for client digest!

Nothing was downloaded.

looking forward to your kind help.

Thanks in advace!